Transportation Data Center Data Set Codebook NUMBER OCTOBER 2004 NASS GES Version 28-Jul-04

Transcription

1 Transportation Data Center Data Set Codebook NUMBER OCTOBER 2004 NASS GES 2003 Version 28-Jul-04 The University of Michigan Transportation Research Institute

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3 NASS General Estimates Systems (GES) 2003 Codebook - Version 28Jul04 Introduction This codebook documents data sets describing a sample of motor vehicle accidents that occurred in the USA during calendar year The data sets were generated by the Transportation Data Center at the University of Michigan's Transportation Research Institute (UMTRI) from data collected by the National Center for Statistics and Analysis (NCSA) of the National Highway Traffic Safety Administration (NHTSA). The cooperation of NHTSA is gratefully acknowledged. These data are a copy of the NHTSA files made on July 28, The data are a sample of the 2003 motor vehicle accidents for which candidate accidents were chosen with varying probabilities according to a scheme detailed in the Users Manual. 1 Accident reports chosen for inclusion represent accidents of all types with personal injuries ranging from minor to serious that were drawn from geographic areas reflecting the geography, roadway mileage, population, and traffic densities typical of the continental United States. The data set supplied by NHTSA is relational in structure with three separate relations that describe accident parameters, vehicles and drivers, and persons (i.e., occupants and nonmotorists). This structure has been reformatted into a set of four rectangular files described below. A relational data set is maintained, however, and persons interested in rectangular file structures not supplied in the system data sets should contact the Data Center. 1 National Center for Statistics and Analysis, National Automotive Sampling System (NASS) GENERAL ESTIMATES SYSTEM (GES), Analytical User s Manual, File.

4 GES 2003 Introduction In the 2003 GES file there are 344 vehicles with no occupants and these vehicles are not represented in the occupant level data set. Prior years of GES data had a similar number of such cases. The characteristics of the four system data sets that have been developed are presented in the table below. Characteristics of the GES Data Sets DATA SET KEY Freq VARIABLES Accident GES03ACC 59, , Vehicle GES03VEH 105, , 71-82, Occupant GES03OCC 147, , 71-82, , Nonmotorist GES03NMT 3, , 71-82, , , The codebook itself is divided into five sections that document the accident, crash event, vehicle & driver, occupant, and nonmotorist records, respectively. The univariate frequencies and percentages displayed in each section are taken from the corresponding data set: vehicle and driver frequencies from GES03VEH, nonmotorist frequencies from GES03NMT, etc.). An index at the end of the codebook cross references words used in the codebook by variable and code value number. The GES investigation STRATUM (variables 30, 78, 154, 217, 317), groupings of Police Accident Reports (PARs) at the PSU, are defined as: Group 1L - apllies if an occupant of a towed, passenger vehicle is killed. Stratum L also applies when the crash involves one passenger vehicle, the passenger vehicle is towed and one of the occupants receives an A injury and is transported to a ii Version 28Jul04

5 Introduction GES 2003 medical facility for treatment -or- the crash involves two or more passenger vehicles, at least two passenger vehicles are towed and one of the occupants of the towed passenger vehicles receives an A injury and is transported to a medical facility for treatment. No medium or heavy trucks may be involved. Group 2 - applies if the NASS crash does not qualify for Group 1-Stratum L, M or N; but involves at least one medium or heavy truck and either a vehicle which is towed due to damage or at least one involved person that has a police reported injury of K, A, B, or C. Group 3 - applies if the NASS crash does not qualify for Group 1-Stratum L, M or N or Group 2; none of the vehicles involved in the crash are medium or heavy trucks and at least one person involved in the crash has a police reported injury of K, A, or B. Group 4 - applies if the crash does not qualify for Group 1- Stratum L, M or N; Group 2 or Group 3. Further clarification: No one in the crash can receive a K, A or B injury. A person can receive a C injury if there are no medium/heavy trucks involved in the crash. Group 1M - is used if the NASS crash does not qualify for Group 1-Stratum L, but at least one occupant of a towed passenger vehicle is injured and transported to a medical facility for treatment. No medium or heavy trucks may be involved. Group 1N - is used if the NASS crash does not qualify for Group 1-Stratum L or Group 1-Stratum M, but a passenger vehicle is towed and no medium or heavy trucks are involved. Version 28Jul04 iii

6 GES 2003 Introduction While every effort has been made to provide accurate, reliable data, inconsistencies may arise from the source data or from the reformatting procedures used. Consequently, the Data Center cannot guarantee the accuracy of the data but will try to correct any discrepancies that are found. Please notify the Center of any errors or data inconsistencies that are uncovered, as well as any suggestions or comments that you may have concerning the codebook by calling or by ing TDC- For more information about our full line of services, please visit our website: The most current TDC codebooks are available there in PDF format and codebooks can now be ordered online. iv Version 28Jul04

7 General Estimates System (GES) Accident Variable Variable Storage Page Number Name Width Type Number CASE NUMBER 12 Alphabetic 1 2 ACCIDENT DATE - MONTH 2 Numeric 1 3 ACCIDENT DATE - YEAR 4 Numeric 1 4 ACCIDENT DAY OF WEEK 1 Numeric 1 5 ACCIDENT TIME - HOUR 2 Numeric 2 6 ACCIDENT TIME - MINUTE 2 Numeric 2 7 NUM VEH INVOLVED IN ACC 2 Numeric 3 8 NUM NMTR INVOLVED IN ACC 2 Numeric 3 9 LAND USE 1 Numeric 3 10 FIRST HARMFUL EVENT 2 Numeric 3 11 MANNER OF COLLISION 1 Numeric 5 12 INTERSTATE HIGHWAY 1 Numeric 5 13 RELATION TO JUNCTION 2 Numeric 5 14 RELATION TO ROADWAY 2 Numeric 6 15 TRAFFICWAY FLOW 1 Numeric 6 16 NUMBER OF TRAVEL LANES 1 Numeric 7 17 ROADWAY ALIGNMENT 1 Numeric 7 18 ROADWAY PROFILE 1 Numeric 7 19 ROADWAY SURFACE COND 1 Numeric 8 20 TRAFFIC CONTROL DEVICE 2 Numeric 8 21 SPEED LIMIT 2 Numeric 9 22 LIGHT CONDITION 1 Numeric 9 23 ATMOSPHERIC CONDITION 1 Numeric 9 24 SCH BUS RELATED TO ACC 1 Numeric PED/CYCLIST CRASH TYPE 4 Numeric MAX INJ SEVERITY IN ACC 1 Numeric NUM INJ PERSONS IN ACC 2 Numeric ALCOHOL INVOLVED IN ACC 1 Numeric POLICE JURISDICTION 3 Numeric STRATUM 1 Numeric PSU NUMBER 2 Numeric REGION OF COUNTRY 1 Numeric WEIGHT 7 Numeric WORK ZONE 1 Numeric IMP ALC INVOLVED IN ACC 1 Numeric IMP ROADWAY ALIGNMENT 1 Numeric IMP FIRST HARMFUL EVENT 2 Numeric IMP ACCIDENT TIME - HOUR 2 Numeric IMP LIGHT CONDITION 1 Numeric IMP MANNER OF COLLISION 1 Numeric IMP MAX INJ SEV. IN ACC 1 Numeric IMP ACC TIME - MINUTE 2 Numeric IMP NUM INJ PER IN ACC 2 Numeric IMPUTED ROADWAY PROFILE 1 Numeric IMP RELATION TO JUNCTION 2 Numeric IMPUTED SPEED LIMIT 2 Numeric IMP ROADWAY SURFACE COND 1 Numeric IMP TRAFFIC CONTROL DEV 2 Numeric IMP ATMOSPHERIC COND 1 Numeric IMP ACCIDENT DAY OF WEEK 1 Numeric 24

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9 General Estimates System (GES) Crash Event Variable Variable Storage Page Number Name Width Type Number CASE NUMBER 12 Alphabetic EVENT SEQUENCE NUMBER 2 Numeric VEHICLE NUMBER 2 Numeric GEN AREA DAMAGE-THIS VEH 2 Numeric VEH #-OTH VEH/OBJ CONTAC 3 Numeric GEN AREA OF DAM-OTH VEH 2 Numeric POLICE JURISDICTION 3 Numeric STRATUM 1 Numeric PSU NUMBER 2 Numeric REGION OF COUNTRY 1 Numeric ACTION FOR THIS EVENT 1 Numeric WEIGHT 7 Numeric 30

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11 General Estimates System (GES) Vehicle Variable Variable Storage Page Number Name Width Type Number CASE NUMBER 12 Alphabetic VEHICLE NUMBER 2 Numeric DRIVER PRESENCE 1 Numeric HIT-AND-RUN 1 Numeric MAKE 2 Numeric MAKE/MODEL 5 Numeric MODEL YEAR 4 Numeric BODY TYPE 2 Numeric CARGO BODY TYPE 2 Numeric NO OF AXLES ON VEH/TRAIL 2 Numeric VIN 11 Alphabetic SPECIAL USE 2 Numeric HAZ MATERIAL PLACARD NO 5 Numeric HAZ MATERIALS PLACARDED 1 Numeric HAZ MATERIALS RELEASE 1 Numeric EMERGENCY USE 1 Numeric CARRIER'S ID NUMBER 9 Numeric NUM OCC INVOLVED IN VEH 2 Numeric NUMBER OF OCCUPANTS 2 Numeric TRAVEL SPEED 3 Numeric VEHICLE TRAILERING 1 Numeric JACKKNIFE 1 Numeric ROLLOVER 2 Numeric FIRE OCCURRENCE 1 Numeric INITIAL POINT OF IMPACT 2 Numeric DAMAGE AREA #1 1 Numeric DAMAGE AREA #2 1 Numeric DAMAGE AREA #3 1 Numeric DAMAGE AREA #4 1 Numeric DAMAGE AREA #5 1 Numeric DAMAGE SEVERITY 1 Numeric MANNER OF LEAVING SCENE 1 Numeric MOST HARMFUL EVENT 2 Numeric MHE EVENT NUMBER 2 Numeric PRIOR TO CRITICAL EVENT 2 Numeric CRITICAL EVENT 3 Numeric CORRECTIVE ACTION ATTEMP 2 Numeric PRECRASH VEHICLE CONTROL 2 Numeric PRECRASH LOCATION 2 Numeric VEHICLE ROLE 1 Numeric ACCIDENT TYPE 2 Numeric SPEED RELATED 1 Numeric ROADWAY ALIGNMENT 1 Numeric NUMBER OF TRAVEL LANES 1 Numeric ROADWAY PROFILE 1 Numeric SPEED LIMIT 2 Numeric SURFACE CONDITION 1 Numeric TRAFFICWAY FLOW 1 Numeric MAX INJ SEVERITY IN VEH 1 Numeric NUMBER INJURED IN VEH 2 Numeric 79

12 General Estimates System (GES) Vehicle Variable Variable Storage Page Number Name Width Type Number DRIVER DRINKING IN VEH 1 Numeric DRIVERS ZIP CODE 5 Numeric POLICE JURISDICTION 3 Numeric STRATUM 1 Numeric PSU NUMBER 2 Numeric REGION OF COUNTRY 1 Numeric WEIGHT 7 Numeric IMPUTED BODY TYPE 2 Numeric IMPUTED HIT-AND-RUN 1 Numeric IMP INIT POINT OF IMPACT 2 Numeric IMP PRIOR TO CRIT EVENT 2 Numeric IMPUTED MODEL YEAR 4 Numeric IMP MAX INJ SEV IN VEH 1 Numeric IMP NUM INJURED IN VEH 2 Numeric IMP VIOLATIONS CHARGED 2 Numeric IMPUTED VEHICLE ROLE 1 Numeric IMP ALC INVOLVED IN VEH 1 Numeric IMP MOST HARMFUL EVENT 2 Numeric TRAFFIC CONTRL DEVICE #1 2 Numeric TRAFFIC CONTRL DEVICE #2 2 Numeric TRAFFIC CONTRL DEVICE #3 2 Numeric TRAFFIC CONTRL DEVICE #4 2 Numeric DRVR MANEUVER TO AVOID#1 2 Numeric DRVR MANEUVER TO AVOID#2 2 Numeric VEHICLE CONTRIB FACTOR#1 2 Numeric VEHICLE CONTRIB FACTOR#2 2 Numeric VEHICLE CONTRIB FACTOR#3 2 Numeric VEHICLE CONTRIB FACTOR#4 2 Numeric VISION OBSCURED BY #1 2 Numeric VISION OBSCURED BY #2 2 Numeric VISION OBSCURED BY #3 2 Numeric DRIVER DISTRACTED BY #1 2 Numeric DRIVER DISTRACTED BY #2 2 Numeric DRIVER DISTRACTED BY #3 2 Numeric DRVR VIOLATNS CHARGED #1 2 Numeric DRVR VIOLATNS CHARGED #2 2 Numeric DRVR VIOLATNS CHARGED #3 2 Numeric DRVR VIOLATNS CHARGED #4 2 Numeric DRVR VIOLATNS CHARGED #5 2 Numeric 100

13 General Estimates System (GES) Occupant Variable Variable Storage Page Number Name Width Type Number CASE NUMBER 12 Alphabetic VEHICLE NUMBER 2 Numeric OCCUPANT NUMBER 2 Numeric OCCUPANT TYPE 1 Numeric OCC SEATING POSITION 2 Numeric OCC RESTRAINT SYSTEM USE 1 Numeric AIRBAG AVAIL/FUNCTION 1 Numeric OCCUPANT EJECTION 1 Numeric OCCUPANT AGE 3 Numeric OCCUPANT SEX 1 Numeric OCC INJURY SEVERITY 1 Numeric TAKEN TO HOSP/TREATMENT 1 Numeric PAR ALCOHOL INVOLVEMENT 1 Numeric PAR DRUG INVOLVEMENT 1 Numeric FILLER 2 Numeric POLICE JURISDICTION 3 Numeric STRATUM 1 Numeric PSU NUMBER 2 Numeric REGION OF COUNTRY 1 Numeric WEIGHT 7 Numeric IMPUTED OCCUPANT AGE 3 Numeric IMP PAR ALC INVOLVEMENT 1 Numeric IMPUT OCCUPANT EJECTION 1 Numeric IMP OCC INJURY SEVERITY 1 Numeric IMP OCC SEATING POSITION 2 Numeric IMPUTED OCCUPANT SEX 1 Numeric PHYSICAL IMPAIRMENT #1 2 Numeric PHYSICAL IMPAIRMENT #2 2 Numeric 112

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15 General Estimates System (GES) Nonmotorist Variable Variable Storage Page Number Name Width Type Number CASE NUMBER 12 Alphabetic VEH STRIKING NUMBER NMTR 2 Numeric NONMOTORIST NUMBER 2 Numeric NONMOTORIST TYPE 1 Numeric FILLER 2 Numeric FILLER 1 Numeric FILLER 1 Numeric FILLER 1 Numeric NONMOTORIST AGE 3 Numeric NONMOTORIST SEX 1 Numeric NMTR INJURY SEVERITY 1 Numeric TAKEN TO HOSP/TREATMENT 1 Numeric PAR ALCOHOL INVOLVEMENT 1 Numeric PAR DRUG INVOLVEMENT 1 Numeric NMTR LOCATION 2 Numeric POLICE JURISDICTION 3 Numeric STRATUM 1 Numeric PSU NUMBER 2 Numeric REGION OF COUNTRY 1 Numeric WEIGHT 7 Numeric IMPUTED NONMOTORIST AGE 3 Numeric IMP PAR ALC INVOLVEMENT 1 Numeric FILLER 1 Numeric IMP NMTR INJURY SEVERITY 1 Numeric FILLER 2 Numeric IMPUTED NONMOTORIST SEX 1 Numeric PHYSICAL IMPAIRMENT #1 2 Numeric PHYSICAL IMPAIRMENT #2 2 Numeric NONMOTORIST ACTION #1 2 Numeric NONMOTORIST ACTION #2 2 Numeric NONMOTORIST ACTION #3 2 Numeric NONMOTORIST ACTION #4 2 Numeric NONMOTORIST ACTION #5 2 Numeric BICYCL TRAF CNTRL DEVC#1 2 Numeric BICYCL TRAF CNTRL DEVC#2 2 Numeric SAFETY EQUIPMENT USED #1 2 Numeric SAFETY EQUIPMENT USED #2 2 Numeric 126

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17 General Estimates System (GES) Page Accident The ACCIDENT Variables Variables 1 through 50 describe the accident. They are included in the Accident, Vehicle, Occupant, and Non-motorist data sets. The Accident data set contains these variables and no others. Variable 1 CASE NUMBER Width: 12 Type: Alphabetic Dec: None Miss: None Variable 2 ACCIDENT DATE - MONTH Width: 2 Type: Numeric Dec: None Miss: None January February March April May June July August September October November December Variable 3 ACCIDENT DATE - YEAR Width: 4 Type: Numeric Dec: None Miss: None Variable 4 ACCIDENT DAY OF WEEK Width: 1 Type: Numeric Dec: None Miss: Sunday Monday Tuesday Wednesday Thursday

18 Page 2 General Estimates System (GES) Accident Variable 4:ACCIDENT DAY OF WEEK (Continued) Friday Saturday Variable 5 ACCIDENT TIME - HOUR Width: 2 Type: Numeric Dec: None Miss: 99 Crash time - hour :01 am - 12:59 am :00 am - 1:59 am :00 am - 2:59 am :00 am - 3:59 am :00 am - 4:59 am :00 am - 5:59 am :00 am - 6:59 am :00 am - 7:59 am :00 am - 8:59 am :00 am - 9:59 am :00 am - 10:59 am :00 am - 11:59 am :00 pm - 12:59 pm :00 pm - 1:59 pm :00 pm - 2:59 pm :00 pm - 3:59 pm :00 pm - 4:59 pm :00 pm - 5:59 pm :00 pm - 6:59 pm :00 pm - 7:59 pm :00 pm - 8:59 pm :00 pm - 9:59 pm :00 pm - 10:59 pm :00 pm - 11:59 pm :00 Midnight Unknown Variable 6 ACCIDENT TIME - MINUTE Width: 2 Type: Numeric Dec: None Miss: 99 Crash time - minute Minute Unknown

19 General Estimates System (GES) Page Accident Variable 7 NUM VEH INVOLVED IN ACC Width: 2 Type: Numeric Dec: None Miss: None Number of vehicles involved vehicle involved vehicles involved vehicles involved vehicles involved vehicles involved vehicles involved vehicles involved vehicles involved vehicles involved Variable 8 NUM NMTR INVOLVED IN ACC Width: 2 Type: Numeric Dec: None Miss: 99 Number of nonmotorists involved nonmotorists involved nonmotorist involved nonmotorists involved nonmotorists involved nonmotorists involved nonmotorists involved nonmotorists involved Variable 9 LAND USE Width: 1 Type: Numeric Dec: None Miss: Within area of population 25,000-50, Within area of population 50, , Within area of population 100, Other area Variable 10 FIRST HARMFUL EVENT Width: 2 Type: Numeric Dec: None Miss: 99 Noncollision Rollover/Overturn Fire/Explosion

20 Page 4 General Estimates System (GES) Accident Variable 10:FIRST HARMFUL EVENT (Continued) Immersion Gas inhalation Jackknife Noncollision injury (injured in or fell from vehicle) Pavement surface irregularity (ruts, potholes, grates, etc.) Other noncollision Noncollision - no details Thrown or falling object Collision with Object Not Fixed Pedestrian Cycle or cyclist (pedalcycle or pedalcyclist) Railway train Animal Motor vehicle in transport Parked motor vehicle (or other mv not in transport) Other type nonmotorist Other object not fixed Object not fixed - no details Collision with Fixed Object Ground Building Impact attenuator or crash cushion Bridge structure (bridge pier/abutment/parapet end/rail) Guardrail Concrete traffic barrier or other longitudinal barrier type Sign post, utility pole or other support Culvert or ditch Curb Embankment Fence Wall Fire hydrant Shrubbery or bush Tree Boulder Other fixed object Fixed object - no details Unknown

21 General Estimates System (GES) Page Accident Variable 11 MANNER OF COLLISION Width: 1 Type: Numeric Dec: None Miss: Not collision with motor vehicle in transport Rear-end Head-on Rear-to-rear Angle Sideswipe, same direction Sideswipe, opposite direction Unknown Variable 12 INTERSTATE HIGHWAY Width: 1 Type: Numeric Dec: None Miss: No Yes Unknown Variable 13 RELATION TO JUNCTION Width: 2 Type: Numeric Dec: None Miss: 99 Non-Interchange Area Non-junction Intersection Intersection related Driveway, alley access, etc Entrance/exit ramp Rail grade crossing On a bridge Crossover related Other, non-interchange Unknown, non-interchange Interchange Area Non-junction Intersection Intersection related Driveway alley access, etc Entrance/exit ramp On a bridge Crossover related Other location in interchange Unknown, interchange area

22 Page 6 General Estimates System (GES) Accident Variable 13:RELATION TO JUNCTION (Continued) Unknown if Interchange or Noninterchange Unknown if interchange Variable 14 RELATION TO ROADWAY Width: 2 Type: Numeric Dec: None Miss: 99 Indicates the location of the first harmful event On roadway On shoulder On median On roadside Outside trafficway Off roadway - location unknown In parking lane Gore Continuous left turn lane Separator Unknown Variable 15 TRAFFICWAY FLOW Width: 1 Type: Numeric Dec: None Miss: 9 If the crash involves vehicles traveling on different trafficways (e.g., first harmful event occurred in an intersection), the trafficway coded is based on the roadway surface type and number of travel lanes of the trafficways involved and a determination of which vehicle contributed most to the cause of the crash Not physically divided (center 2-way left turn lane) Not physically divided (two way trafficway) Divided highway (median strip, barrier, etc.) One way trafficway Unknown

23 General Estimates System (GES) Page Accident Variable 16 NUMBER OF TRAVEL LANES Width: 1 Type: Numeric Dec: None Miss: 9 If the crash involves vehicles traveling on different trafficways (e.g., first harmful event occurred in an intersection), the trafficway coded is based on the roadway surface type and number of travel lanes of the trafficways involved and a determination of which vehicle contributed most to the cause of the crash One lane Two lanes Three lanes Four lanes Five lanes Six lanes Seven or more lanes Unknown Variable 17 ROADWAY ALIGNMENT Width: 1 Type: Numeric Dec: None Miss: 9 If the crash involves vehicles traveling on different trafficways (e.g., first harmful event occurred in an intersection), the trafficway coded is based on the roadway surface type and number of travel lanes of the trafficways involved and a determination of which vehicle contributed most to the cause of the crash Straight Curve Unknown Variable 18 ROADWAY PROFILE Width: 1 Type: Numeric Dec: None Miss: 9 If the crash involves vehicles traveling on different trafficways (e.g., first harmful event occurred in an intersection), the trafficway coded is based on the roadway surface type and number of travel lanes of the trafficways involved and a determination of which vehicle contributed most to the cause of the crash Level Grade Hillcrest Sag Unknown

24 Page 8 General Estimates System (GES) Accident Variable 19 ROADWAY SURFACE COND Width: 1 Type: Numeric Dec: None Miss: 9 Roadway surface condition If the crash involves vehicles traveling on different trafficways (e.g., first harmful event occurred in an intersection), the trafficway coded is based on the roadway surface type and number of travel lanes of the trafficways involved and a determination of which vehicle contributed most to the cause of the crash Dry Wet Snow or slush Ice Sand, dirt, oil Other Unknown Variable 20 TRAFFIC CONTROL DEVICE Width: 2 Type: Numeric Dec: None Miss: No controls NOT AT RAILROAD GRADE CROSSING: Trafficway Traffic Signals Traffic control signal (on colors) Flashing traffic control signal or flashing beacon Other traffic signal Unknown traffic signal Regulatory, School Zone Signs Stop sign Yield sign School zone related sign Other sign Unknown sign Warning Signs Advisory speed sign Warning sign for road conditions (hill, steep grade, etc.) Warning sign for road construction Warning sign for environment / traffic (fog ahead, wind, crash ahead, etc.) Unknown type warning sign Miscellaneous Not at Railroad Crossing Officer, crossing guard, flagman, etc.

25 General Estimates System (GES) Page Accident Variable 20:TRAFFIC CONTROL DEVICE (Continued) AT RAILROAD GRADE CROSSING: Active devices (gates, flashing lights, traffic signal) Passive devices (stop sign, cross-bucks) OTHER: Traffic control present - no details Other traffic control (whether or not at RR grade crossing) Unknown Variable 21 SPEED LIMIT Width: 2 Type: Numeric Dec: None Miss: 99 If the crash involves vehicles traveling on different trafficways (e.g. first harmful event occurred in an intersection), the highest speed limit is coded No statutory limit (parking lot, alley, etc.) Actual posted speed limit in miles per hour Unknown Variable 22 LIGHT CONDITION Width: 1 Type: Numeric Dec: None Miss: Daylight Dark Dark, but lighted Dawn Dusk Unknown Variable 23 ATMOSPHERIC CONDITION Width: 1 Type: Numeric Dec: None Miss: No adverse atmospheric conditions Rain Sleet Snow

26 Page 10 General Estimates System (GES) Accident Variable 23:ATMOSPHERIC CONDITION (Continued) Fog Rain and fog Sleet and fog Other (smog, smoke, blowing sand/dust/snow, crosswind, hail) Unknown Variable 24 SCH BUS RELATED TO ACC Width: 1 Type: Numeric Dec: None Miss: None Was a school bus directly or indirectly involved? No Yes Variable 25 PED/CYCLIST CRASH TYPE Width: 4 Type: Numeric Dec: None Miss: None Pedestrian/Cyclist crash type No pedestrian/cyclist involved Ride out, residential driveway Ride out, commercial driveway Ride out from sidewalk Ride out, midblock Ride out, stop sign Trapped Multiple threat Drive out, driveway / alley Drive out, stop sign Right on red The crash involves a motor vehicle which is backing Drive through Motorist overtakes undetected cyclist Motorist lost control Motorist overtaking, counteractive evasive actions Motorist overtaking, misjudges passing space Motorist overtaking cyclist, path obstructed Cyclist left turn, in front of traffic Cyclist left turn, facing traffic Cyclist lost control Cyclist right turn, from wrong side of street Motorist left turn, in front of cyclist

27 General Estimates System (GES) Page Accident Variable 25:PED/CYCLIST CRASH TYPE (Continued) Motorist left turn, facing cyclist Motorist right turn, in front of cyclist Uncontrolled intersection, other Wrong-way cyclist Cyclist overtaking Wrong-way motorist Parking lot, open area, or another nonroadway location, such as a gas station Head-on, counteractive evasive actions Cyclist cuts corner Cyclist swings wide Motorist cuts corner Motorist swings wide Drive out - on street parking Weird - the motorist or cyclist intentionally causes the crash, officer indicates no crash actually occurs, crash does not involve a cyclist, cyclist is struck by falling cargo Motorist overtaking Is the pedalcyclist riding a children's vehicle? (big wheel, other tricycle, or bicycle with training wheels) Cyclist strikes parked vehicle Drive out, intersection Ride out, intersection Controlled intersection, other Unknown if approach paths are parallel or crossing Parallel path 7 - No way of knowing which parallel path 1-6 is true Crossing path 8 - No way of knowing which crossing path 1-7 is true Commercial bus related School bus related Ice cream vendor Mailbox related Entering / Exiting Driverless vehicle Backing vehicle Hot pursuit Walking to or from disabled vehicle Disabled vehicle related Emergency / police vehicle related Working on roadway Play vehicle related Playing in roadway Hitchhiking Expressway crossing Walking along road - with traffic Walking along road - against traffic Walking along road - can't specify Pedestrian waiting to cross at / near curb Pedestrian not in roadway Multiple threat - at intersection

28 Page 12 General Estimates System (GES) Accident Variable 25:PED/CYCLIST CRASH TYPE (Continued) Vehicle turn / merge Intersection dash Trapped Pedestrian walks into vehicle - at intersection Intersection - driver violation Intersection - other Multiple threat - at midblock Dart-out - first half Dart-out - second half Dart-out - can't specify Midblock dash Pedestrian walks into vehicle - midblock Midblock - other Other - weird Inadequate information Wheelchair Pedestrian Crash Types Wheelchair: Backing vehicle Wheelchair: Walking along road - against traffic Wheelchair: Vehicle turn / merge Wheelchair: Intersection - other The following list shows the code values given above grouped by category. Category 1 - Pedestrian Crash Types 110 Commercial bus related 120 School bus related 130 Ice cream vendor 140 Mailbox related 150 Entering / Exiting Category Driverless vehicle 220 Backing vehicle 230 Hot pursuit Category Walking to or from disabled vehicle 320 Disabled vehicle related 330 Emergency / police vehicle related Category Working on roadway 420 Play vehicle related 430 Playing in roadway Category Hitchhiking 520 Expressway crossing 531 Walking along roadway - with traffic

29 General Estimates System (GES) Page Accident Variable 25:PED/CYCLIST CRASH TYPE (Continued) 532 Walking along roadway - against traffic 539 Walking along roadway - can't specify Category Pedestrian waiting to cross at / near curb 620 Pedestrian not in roadway Category Multiple threat - at intersection 720 Vehicle turn / merge 730 Intersection dash 740 Trapped 750 Pedestrian walks into vehicle - at intersection 760 Intersection, driver violation 790 Intersection - other Category Multiple threat - at midblock 821 Dart-out - first half 822 Dart-out - second half 829 Dart-out - can't specify 830 Midblock dash 840 Pedestrian walks into vehicle - midblock 890 Midblock - other Category Other - weird 920 Inadequate information Specific circumstances - Weird 36 Weird - the motorist or cyclist intentionally causes the crash, officer indicates no crash actually occurs, crash does not involve a cyclist, cyclist is struck by falling cargo Specific circumstances - Children's vehicle 40 Is the pedalcyclist riding a children's vehicle? (big wheel, other tricycle, or bicycle with training wheels) Specific circumstances - Backing motor vehicle 11 The crash involves a motor vehicle which is backing Specific circumstances - Not on a roadway 29 Parking lot, open area, or another nonroadway location Approach paths - parallel versus crossing 97 Unknown if approach paths are parallel or crossing Parallel path category 98 Parallel path 7 - No way of knowing which parallel path 1-6 is true

30 Page 14 General Estimates System (GES) Accident Variable 25:PED/CYCLIST CRASH TYPE (Continued) Crossing path category 99 Crossing path 8 - No way of knowing which crossing path 1-7 is true Parallel/Crossing path category crash type Parallel path 1 (motorist turns or merges into the path of the cyclist) 35 Drive out - on street parking 22 Motorist left turn, in front of cyclist 23 Motorist left turn, facing cyclist 24 Motorist right turn, in front of cyclist Parallel path 2 (cyclist turns or merges into the path of the motorist) 3 Ride out from sidewalk 18 Cyclist left turn, in front of traffic 19 Cyclist left turn, facing traffic 21 Cyclist right turn, from wrong side of street Parallel path 3 (operator is on the wrong side of the street) 30 Head-on, counteractive evasive actions 28 Wrong-way motorist 26 Wrong-way cyclist Parallel path 4 (motorist is overtaking the cyclist) 13 Motorist overtakes undetected cyclist 15 Motorist overtaking, counteractive evasive actions 16 Motorist overtaking, misjudges passing space 17 Motorist overtaking cyclist, path obstructed 39 Motorist overtaking Parallel path 5 (cyclist is overtaking a motor vehicle) 27 Cyclist overtaking 41 Cyclist strikes parked vehicle Parallel path 6 (operator loss control and inadvertently swerves into the path of the other vehicle because) 14 Motorist lost control 20 Cyclist lost control Crossing path 1 (cyclist does not clear intersection before light turns green for cross traffic) 6 Trapped 7 Multiple threat Crossing path 2 (motorist fails to yield to cyclist) 8 Drive out, driveway / alley 12 Drive through 9 Drive out, stop sign 10 Right on red 48 Drive out, intersection

31 General Estimates System (GES) Page Accident Variable 25:PED/CYCLIST CRASH TYPE (Continued) Crossing path 3 (cyclist fails to yield to the motorist, midblock) 1 Ride out, residential driveway 2 Ride out, commercial driveway 4 Ride out, midblock Crossing path 4 (cyclist fails to yield to the motorist, at an intersection) 5 Ride out, stop sign 49 Ride out, intersection Crossing path 5 (motor is turning) 33 Motorist cuts corner 34 Motorist swings wide Crossing path 6 (cyclist is turning) 31 Cyclist cuts corner 32 Cyclist swings wide Crossing path 7 (crash occurs at an intersection) 55 Controlled intersection, other 25 Uncontrolled intersection, other Variable 26 MAX INJ SEVERITY IN ACC Width: 1 Type: Numeric Dec: None Miss: 9 Maximum injury severity in crash No injury Possible injury Nonincapacitating Incapacitating Fatal Injured, unknown severity Died prior No person involved in crash Unknown if injured Variable 27 NUM INJ PERSONS IN ACC Width: 2 Type: Numeric Dec: None Miss: 99 Number of injured persons in crash No person injured / property damage only crash

32 Page 16 General Estimates System (GES) Accident Variable 27:NUM INJ PERSONS IN ACC (Continued) Actual number of people injured No person involved in the crash Unknown Variable 28 ALCOHOL INVOLVED IN ACC Width: 1 Type: Numeric Dec: None Miss: 9 Was alcohol usage involved in the crash? Alcohol involved No alcohol involved No person coded Unknown Variable 29 POLICE JURISDICTION Width: 3 Type: Numeric Dec: None Miss: None Police Jurisdiction codes repeated in each PSU. Variable 30 STRATUM Width: 1 Type: Numeric Dec: None Miss: None Group 1L - applies if an occupant of a towed, passenger vehicle is killed. Stratum L also applies when the crash involves one passenger vehicle, the passenger vehicle is towed and one of the occupants receives an A injury and is transported to a medical facility for treatment -or- the crash involves two or more passenger vehicles, at least two passenger vehicles are towed and one of the occupants of the towed passenger vehicles receives an A injury and is transported to a medical facility for treatment. No medium or heavy trucks may be involved Group 2 - applies if the NASS crash does not qualify for Group 1-Stratum L, M or N; but involves at least one medium or heavy truck and either a vehicle which is towed due to damage or at least one involved person that has a police reported injury of K, A, B, or C.

33 General Estimates System (GES) Page Accident Variable 30:STRATUM (Continued) Group 3 - applies if the NASS crash does not qualify for Group 1-Stratum L, M or N or Group 2; none of the vehicles involved in the crash are medium or heavy trucks and at least one person involved in the crash has a police reported injury of K, A, or B Group 4 - applies if the crash does not qualify for Group 1-Stratum L, M or N; Group 2 or Group 3. Further clarification: No one in the crash can receive a K, A or B injury. A person can receive a C injury if there are no medium/heavy trucks involved in the crash Group 1M - applies if the NASS crash does not qualify for Group 1-Stratum L, but at least one occupant of a towed passenger vehicle is injured and transported to a medical facility for treatment. No medium or heavy trucks may be involved Group 1N - applies if the NASS crash does not qualify for Group 1-Stratum L or Group 1-Stratum M, but a passenger vehicle is towed and no medium or heavy trucks are involved. Variable 31 PSU NUMBER Width: 2 Type: Numeric Dec: None Miss: None Variable 32 REGION OF COUNTRY Width: 1 Type: Numeric Dec: None Miss: None Northeast Midwest South West Variable 33 WEIGHT Width: 7 Type: Numeric Dec: 2 Miss: None Variable 34 WORK ZONE Width: 1 Type: Numeric Dec: None Miss: None No Yes

34 Page 18 General Estimates System (GES) Accident Imputed ACCIDENT Variables Variables 35 through 50 are imputed versions of previous variables found in the accident dataset. Variable 35 IMP ALC INVOLVED IN ACC Width: 1 Type: Numeric Dec: None Miss: None Imputed alcohol involved in crash This variable was imputed by NHTSA Alcohol involved No alcohol involved Variable 36 IMP ROADWAY ALIGNMENT Width: 1 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Straight Curve Variable 37 IMP FIRST HARMFUL EVENT Width: 2 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Noncollision Rollover/overturn Fire/explosion Immersion Gas inhalation Jackknife

35 General Estimates System (GES) Page Accident Variable 37:IMP FIRST HARMFUL EVENT (Continued) Noncollision injury (injured in vehicle, or fell from vehicle) Pavement Surface Irregularity (ruts, potholes, grates, etc.) Other noncollision Noncollision - no details Thrown or falling object Collision with Object Not Fixed Pedestrian Cycle or cyclist (pedalcycle or pedalcyclist) Railway train Animal Motor vehicle in transport Parked motor vehicle (or other mv not in transport) Other type nonmotorist Other object not fixed Object not fixed - no details Collision with Fixed Object Ground Building Impact attenuator or crash cushion Bridge Structure (pier/abutment/parapet end/rail) Guardrail Concrete traffic barrier or other longitudinal barrier type Post, pole or support (sign post, utility post) Culvert or ditch Curb Embankment Fence Wall Fire hydrant Shrubbery or bush Tree Boulder Other fixed object Fixed object - no details Variable 38 IMP ACCIDENT TIME - HOUR Width: 2 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA :01 am - 12:59 am :00 am - 1:59 am :00 am - 2:59 am

36 Page 20 General Estimates System (GES) Accident Variable 38:IMP ACCIDENT TIME - HOUR (Continued) :00 am - 3:59 am :00 am - 4:59 am :00 am - 5:59 am :00 am - 6:59 am :00 am - 7:59 am :00 am - 8:59 am :00 am - 9:59 am :00 am - 10:59 am :00 am - 11:59 am :00 pm - 12:59 pm :00 pm - 1:59 pm :00 pm - 2:59 pm :00 pm - 3:59 pm :00 pm - 4:59 pm :00 pm - 5:59 pm :00 pm - 6:59 pm :00 pm - 7:59 pm :00 pm - 8:59 pm :00 pm - 9:59 pm :00 pm - 10:59 pm :00 pm - 11:59 pm :00 Midnight Variable 39 IMP LIGHT CONDITION Width: 1 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Daylight Dark Dark, but lighted Dawn Dusk Variable 40 IMP MANNER OF COLLISION Width: 1 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Not collision with motor vehicle in transport Rear-end Head-on Rear-to-rear Angle

37 General Estimates System (GES) Page Accident Variable 40:IMP MANNER OF COLLISION (Continued) Sideswipe, same direction Sideswipe, opposite direction Variable 41 IMP MAX INJ SEV. IN ACC Width: 1 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA No injury Possible injury Nonincapacitating Incapacitating Fatal Injured, unknown severity Died prior No person coded in crash Variable 42 IMP ACC TIME - MINUTE Width: 2 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Minute Variable 43 IMP NUM INJ PER IN ACC Width: 2 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA No person injured / property damage only crash Actual number of people injured

38 Page 22 General Estimates System (GES) Accident Variable 44 IMPUTED ROADWAY PROFILE Width: 1 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Level Grade Hillcrest Sag Variable 45 IMP RELATION TO JUNCTION Width: 2 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Non-Interchange Area Non-junction Intersection Intersection related Driveway, alley access, etc Entrance/exit ramp Rail grade crossing On a bridge Crossover related Other, non-interchange Interchange Area Non-junction Intersection Intersection related Driveway alley access, etc Entrance/exit ramp On a bridge Crossover related Other location in interchange Variable 46 IMPUTED SPEED LIMIT Width: 2 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA No statutory limit (parking lot, alley, etc.) Actual speed limit

39 General Estimates System (GES) Page Accident Variable 47 IMP ROADWAY SURFACE COND Width: 1 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Dry Wet Snow or slush Ice Sand, dirt, oil Other Variable 48 IMP TRAFFIC CONTROL DEV Width: 2 Type: Numeric Dec: None Miss: None Imputed traffic control device This variable was imputed by NHTSA No controls NOT AT RAILROAD GRADE CROSSING: Trafficway Traffic Signals Traffic control signal (on colors) Flashing traffic control signal or flashing beacon Other traffic signal Unknown traffic signal Regulatory, School Zone or Warning Signs Stop sign Yield sign School zone related sign Other sign Unknown sign Warning Signs Advisory speed sign Warning sign for road conditions (hill, steep grade, etc.) Warning sign for road construction Warning sign for environment/traffic (fog ahead, wind, crash ahead) Unknown type warning Miscellaneous Not at Railroad Crossing Officer, crossing guard, flagman, etc. AT RAILROAD GRADE CROSSING: Active devices (gates, flashing lights, traffic signal)

40 Page 24 General Estimates System (GES) Accident Variable 48:IMP TRAFFIC CONTROL DEV (Continued) Passive devices (stop sign, cross-bucks) OTHER: Traffic control present - no details Other traffic control (whether or not at RR grade crossing) Variable 49 IMP ATMOSPHERIC COND Width: 1 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA No adverse atmospheric related driving conditions Rain Sleet Snow Fog Rain and fog Sleet and fog Other (smog, smoke, blowing sand/dust/snow, crosswind, hail) Variable 50 IMP ACCIDENT DAY OF WEEK Width: 1 Type: Numeric Dec: None Miss: None This variable was imputed by NHTSA Sunday Monday Tuesday Wednesday Thursday Friday Saturday

41 General Estimates System (GES) Page Crash Event The Crash Event Variables Variables 71 through 82 describe the first harmful event for this crash. This event may not include all vehicles in the crash. There may be many event records for a single crash, only the first is coded here. Variable 71 CASE NUMBER Width: 12 Type: Alphabetic Dec: None Miss: None Variable 72 EVENT SEQUENCE NUMBER Width: 2 Type: Numeric Dec: None Miss: None Chronological sequence of harmful events in the accident st event Variable 73 VEHICLE NUMBER Width: 2 Type: Numeric Dec: None Miss: None Vehicle number of the first involved vehicle in the crash Vehicle # Vehicle # Vehicle # Vehicle # Vehicle # Vehicle # Vehicle #7

42 Page 26 General Estimates System (GES) Crash Event Variable 74 GEN AREA DAMAGE-THIS VEH Width: 2 Type: Numeric Dec: None Miss: 99 General area of damage - this vehicle Indicates the impact point that produced property damage or personal injury for this transport motor vehicle involved in the event Noncollision Front Right side Left side Back Top Undercarriage Front right corner Front left corner Back right corner Back left corner Point of impact unknown Variable 75 VEH #-OTH VEH/OBJ CONTAC Width: 3 Type: Numeric Dec: None Miss: 999 Vehicle number of the other vehicle or object hit, or the type of noncollision involved in the event Collision with Motor Vehicle in Transport Vehicle # Vehicle # Vehicle # Vehicle # Vehicle # Vehicle # Vehicle # Vehicle #8 Noncollision Rollover/overturn Fire/explosion Immersion Gas inhalation Jackknife Noncollision injury - injured in or fell from vehicle Pavement surface irregularity (ruts, potholes, grates, etc.) Other noncollision

43 General Estimates System (GES) Page Crash Event Variable 75:VEH #-OTH VEH/OBJ CONTAC (Continued) Noncollision - no details Thrown or falling object Collision with Object Not Fixed Pedestrian Cycle or cyclist (pedalcycle or pedalcyclist) Railway train Animal Parked motor vehicle (or other mv not in transport) Other type nonmotorist Other object not fixed Object not fixed - no details Collision with Fixed Object Ground Building Impact attenuator or crash cushion Bridge structure (bridge pier/abutment/parapet end/rail) Guardrail Concrete traffic barrier or other longitudinal barrier type Sign post, utility pole or other support Culvert or ditch Curb Embankment Fence Wall Fire hydrant Shrubbery or bush Tree Boulder Other fixed object Fixed object - no details Unknown Unknown Variable 76 GEN AREA OF DAM-OTH VEH Width: 2 Type: Numeric Dec: None Miss: 99 General area of damage - other vehicle Indicates the impact point for the other in transport motor vehicle involved in the harmful event Front Right side